wiring a 3 phase Air Compressor Pressure Switch Control First, check out my page here: pressure switch models and options. If you scroll down, you see a picture of the wiring. This is for a single phase compressor/pressure switch. For a three-page pressure switchs, it is basically the same, only you have 3 pairs of contacts. The 3 wires from the motor are connected to the bottom 3 connections.Aug 31, wiring a 3 phase Air Compressor Pressure Switchwiring 3 phase reciprocating compressor – Air Compressor GuideSearch Results for “ ” – Page 63 – Air Compressor GuideRotation error – Air Compressor GuideSee more results How to Wire a 3 Phase Air Compressor - Ask the Electrician We are using a 3 phase 240 volt system and hooking up to an air compressor. We used a pressure switch by Square D part number 9013 FHG12MIX. The black and blue wires from the 3 phase are connected to the pressure switch and then connected to the motor. The red wire from the 3 phase is only connected to the motor. After 3 months the motor burnt out.
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